Luxury Car Sales Finally Drop in North America

 Luxury auto brands, which until recently had been outperforming the rest of the U.S. market, have started to sag. Many people had thought high-end Italian sports cars would remain as invulnerable to the economic downturn as Hamptons real estate and Louis Vuitton bags, but that's beginning to change. To some extent, the higher you go in the luxury spectrum, the stronger the market remains, but